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| <pre><span class="sourceLineNo">001</span><a id="line.1">package org.apache.archiva.redback.authorization.rbac.evaluator;</a> |
| <span class="sourceLineNo">002</span><a id="line.2"></a> |
| <span class="sourceLineNo">003</span><a id="line.3">/*</a> |
| <span class="sourceLineNo">004</span><a id="line.4"> * Licensed to the Apache Software Foundation (ASF) under one</a> |
| <span class="sourceLineNo">005</span><a id="line.5"> * or more contributor license agreements. See the NOTICE file</a> |
| <span class="sourceLineNo">006</span><a id="line.6"> * distributed with this work for additional information</a> |
| <span class="sourceLineNo">007</span><a id="line.7"> * regarding copyright ownership. The ASF licenses this file</a> |
| <span class="sourceLineNo">008</span><a id="line.8"> * to you under the Apache License, Version 2.0 (the</a> |
| <span class="sourceLineNo">009</span><a id="line.9"> * "License"); you may not use this file except in compliance</a> |
| <span class="sourceLineNo">010</span><a id="line.10"> * with the License. You may obtain a copy of the License at</a> |
| <span class="sourceLineNo">011</span><a id="line.11"> *</a> |
| <span class="sourceLineNo">012</span><a id="line.12"> * http://www.apache.org/licenses/LICENSE-2.0</a> |
| <span class="sourceLineNo">013</span><a id="line.13"> *</a> |
| <span class="sourceLineNo">014</span><a id="line.14"> * Unless required by applicable law or agreed to in writing,</a> |
| <span class="sourceLineNo">015</span><a id="line.15"> * software distributed under the License is distributed on an</a> |
| <span class="sourceLineNo">016</span><a id="line.16"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</a> |
| <span class="sourceLineNo">017</span><a id="line.17"> * KIND, either express or implied. See the License for the</a> |
| <span class="sourceLineNo">018</span><a id="line.18"> * specific language governing permissions and limitations</a> |
| <span class="sourceLineNo">019</span><a id="line.19"> * under the License.</a> |
| <span class="sourceLineNo">020</span><a id="line.20"> */</a> |
| <span class="sourceLineNo">021</span><a id="line.21"></a> |
| <span class="sourceLineNo">022</span><a id="line.22">import org.apache.archiva.redback.rbac.Resource;</a> |
| <span class="sourceLineNo">023</span><a id="line.23">import org.apache.archiva.redback.users.UserManager;</a> |
| <span class="sourceLineNo">024</span><a id="line.24">import org.apache.archiva.redback.users.UserManagerException;</a> |
| <span class="sourceLineNo">025</span><a id="line.25">import org.apache.archiva.redback.users.UserNotFoundException;</a> |
| <span class="sourceLineNo">026</span><a id="line.26">import org.apache.archiva.redback.rbac.Permission;</a> |
| <span class="sourceLineNo">027</span><a id="line.27">import org.apache.commons.lang3.StringUtils;</a> |
| <span class="sourceLineNo">028</span><a id="line.28">import org.springframework.stereotype.Service;</a> |
| <span class="sourceLineNo">029</span><a id="line.29"></a> |
| <span class="sourceLineNo">030</span><a id="line.30">import javax.inject.Inject;</a> |
| <span class="sourceLineNo">031</span><a id="line.31">import javax.inject.Named;</a> |
| <span class="sourceLineNo">032</span><a id="line.32"></a> |
| <span class="sourceLineNo">033</span><a id="line.33">/**</a> |
| <span class="sourceLineNo">034</span><a id="line.34"> * DefaultPermissionEvaluator:</a> |
| <span class="sourceLineNo">035</span><a id="line.35"> *</a> |
| <span class="sourceLineNo">036</span><a id="line.36"> * Currently only one expression is available for evaluation, ${username} will be replaced with the username</a> |
| <span class="sourceLineNo">037</span><a id="line.37"> * of the person making the authorization check</a> |
| <span class="sourceLineNo">038</span><a id="line.38"> *</a> |
| <span class="sourceLineNo">039</span><a id="line.39"> * @author Jesse McConnell</a> |
| <span class="sourceLineNo">040</span><a id="line.40"> */</a> |
| <span class="sourceLineNo">041</span><a id="line.41">@Service("permissionEvaluator")</a> |
| <span class="sourceLineNo">042</span><a id="line.42">public class DefaultPermissionEvaluator</a> |
| <span class="sourceLineNo">043</span><a id="line.43"> implements PermissionEvaluator</a> |
| <span class="sourceLineNo">044</span><a id="line.44">{</a> |
| <span class="sourceLineNo">045</span><a id="line.45"> @Inject</a> |
| <span class="sourceLineNo">046</span><a id="line.46"> @Named(value = "userManager#default")</a> |
| <span class="sourceLineNo">047</span><a id="line.47"> private UserManager userManager;</a> |
| <span class="sourceLineNo">048</span><a id="line.48"></a> |
| <span class="sourceLineNo">049</span><a id="line.49"> public boolean evaluate( Permission permission, String operation, String resource, String principal )</a> |
| <span class="sourceLineNo">050</span><a id="line.50"> throws PermissionEvaluationException</a> |
| <span class="sourceLineNo">051</span><a id="line.51"> {</a> |
| <span class="sourceLineNo">052</span><a id="line.52"> String permissionResource = permission.getResource().getIdentifier();</a> |
| <span class="sourceLineNo">053</span><a id="line.53"></a> |
| <span class="sourceLineNo">054</span><a id="line.54"> // expression evaluation checking</a> |
| <span class="sourceLineNo">055</span><a id="line.55"> if ( permissionResource.startsWith( "${" ) )</a> |
| <span class="sourceLineNo">056</span><a id="line.56"> {</a> |
| <span class="sourceLineNo">057</span><a id="line.57"> String tempStr = permissionResource.substring( 2, permissionResource.indexOf( '}' ) );</a> |
| <span class="sourceLineNo">058</span><a id="line.58"></a> |
| <span class="sourceLineNo">059</span><a id="line.59"> if ( "username".equals( tempStr ) )</a> |
| <span class="sourceLineNo">060</span><a id="line.60"> {</a> |
| <span class="sourceLineNo">061</span><a id="line.61"> try</a> |
| <span class="sourceLineNo">062</span><a id="line.62"> {</a> |
| <span class="sourceLineNo">063</span><a id="line.63"> permissionResource = userManager.findUser( principal ).getUsername();</a> |
| <span class="sourceLineNo">064</span><a id="line.64"> }</a> |
| <span class="sourceLineNo">065</span><a id="line.65"> catch ( UserNotFoundException e )</a> |
| <span class="sourceLineNo">066</span><a id="line.66"> {</a> |
| <span class="sourceLineNo">067</span><a id="line.67"> throw new PermissionEvaluationException( "unable to locate user to retrieve username", e );</a> |
| <span class="sourceLineNo">068</span><a id="line.68"> }</a> |
| <span class="sourceLineNo">069</span><a id="line.69"> catch ( UserManagerException e )</a> |
| <span class="sourceLineNo">070</span><a id="line.70"> {</a> |
| <span class="sourceLineNo">071</span><a id="line.71"> throw new PermissionEvaluationException( "trouble finding user: " + e.getMessage(), e );</a> |
| <span class="sourceLineNo">072</span><a id="line.72"> }</a> |
| <span class="sourceLineNo">073</span><a id="line.73"> }</a> |
| <span class="sourceLineNo">074</span><a id="line.74"> }</a> |
| <span class="sourceLineNo">075</span><a id="line.75"></a> |
| <span class="sourceLineNo">076</span><a id="line.76"> // check if this permission applies to the operation at all</a> |
| <span class="sourceLineNo">077</span><a id="line.77"> if ( permission.getOperation().getName().equals( operation ) )</a> |
| <span class="sourceLineNo">078</span><a id="line.78"> {</a> |
| <span class="sourceLineNo">079</span><a id="line.79"> // check if it is a global resource, if it is then since the operations match we return true</a> |
| <span class="sourceLineNo">080</span><a id="line.80"> if ( Resource.GLOBAL.equals( permission.getResource().getIdentifier() ) )</a> |
| <span class="sourceLineNo">081</span><a id="line.81"> {</a> |
| <span class="sourceLineNo">082</span><a id="line.82"> return true;</a> |
| <span class="sourceLineNo">083</span><a id="line.83"> }</a> |
| <span class="sourceLineNo">084</span><a id="line.84"></a> |
| <span class="sourceLineNo">085</span><a id="line.85"> // Resource settings on the permission object and on the annotation</a> |
| <span class="sourceLineNo">086</span><a id="line.86"> // should be in line. If not, we use the least privilege, which means</a> |
| <span class="sourceLineNo">087</span><a id="line.87"> // if one of both is set, we will check for equality.</a> |
| <span class="sourceLineNo">088</span><a id="line.88"> if ( StringUtils.isEmpty( permissionResource ) && resource == null )</a> |
| <span class="sourceLineNo">089</span><a id="line.89"> {</a> |
| <span class="sourceLineNo">090</span><a id="line.90"> return true;</a> |
| <span class="sourceLineNo">091</span><a id="line.91"> }</a> |
| <span class="sourceLineNo">092</span><a id="line.92"></a> |
| <span class="sourceLineNo">093</span><a id="line.93"> // check if the resource identifier of the permission matches the resource we are checking against</a> |
| <span class="sourceLineNo">094</span><a id="line.94"> // if it does then return true</a> |
| <span class="sourceLineNo">095</span><a id="line.95"> if ( permissionResource.equals( resource ) )</a> |
| <span class="sourceLineNo">096</span><a id="line.96"> {</a> |
| <span class="sourceLineNo">097</span><a id="line.97"> return true;</a> |
| <span class="sourceLineNo">098</span><a id="line.98"> }</a> |
| <span class="sourceLineNo">099</span><a id="line.99"> }</a> |
| <span class="sourceLineNo">100</span><a id="line.100"></a> |
| <span class="sourceLineNo">101</span><a id="line.101"> return false;</a> |
| <span class="sourceLineNo">102</span><a id="line.102"> }</a> |
| <span class="sourceLineNo">103</span><a id="line.103"></a> |
| <span class="sourceLineNo">104</span><a id="line.104"> public UserManager getUserManager()</a> |
| <span class="sourceLineNo">105</span><a id="line.105"> {</a> |
| <span class="sourceLineNo">106</span><a id="line.106"> return userManager;</a> |
| <span class="sourceLineNo">107</span><a id="line.107"> }</a> |
| <span class="sourceLineNo">108</span><a id="line.108"></a> |
| <span class="sourceLineNo">109</span><a id="line.109"> public void setUserManager( UserManager userManager )</a> |
| <span class="sourceLineNo">110</span><a id="line.110"> {</a> |
| <span class="sourceLineNo">111</span><a id="line.111"> this.userManager = userManager;</a> |
| <span class="sourceLineNo">112</span><a id="line.112"> }</a> |
| <span class="sourceLineNo">113</span><a id="line.113">}</a> |
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| </pre> |
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